Other Postretirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2012

Other Postretirement Benefit Plans [Abstract]

Components of net periodic benefit cost

	Three Months Ended June 30,
	2012			2011
	(In thousands)
Service cost	$	—		$	—
Interest cost		19			33
Expected return on plan assets		—			—
Net amortization (accretion) of prior service cost		(20	)		—
Recognized net actuarial gain		(23	)		(19	)
Net periodic benefit cost	$	(24	)	$	14
Assumptions used in the valuations were as follows:
Weighted average discount rate		4.00	%		5.00	%
	Six Months Ended June 30,
	2012			2011
	(Dollars in thousands)
Service cost	$	—		$	—
Interest cost		38			66
Expected return on plan assets		—			—
Net amortization of prior service cost		(40	)		—
Recognized net actuarial gain		(46	)		(38	)
Net periodic benefit cost	$	(48	)	$	28
Assumptions used in the valuations were as follows:
Weighted average discount rate		4.00	%		5.00	%